What is the domain of f(a)=(a+7)/(a^2+6a-7) ?

The domain of f(a)=(a+7)/(a^2+6a-7) is a 1

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domain of f(a)=(a+7)/(a^2+6a-7)

domain

f (a) = \frac{a + 7}{a ^{2} + 6 a - 7}

a < - 7 or - 7 < a < 1 or a > 1

Interval Notation

(- \infty, - 7) \cup (- 7, 1) \cup (1, \infty)

Solution steps

Find undefined (singularity) points:

a = 1, a = - 7

The function domain

a < - 7 or - 7 < a < 1 or a > 1

2 a \cdot 2 a

(12 - 7 i) - (4 - 5 i)

s (s + 1) (s + 5)

(x + 7) (x - 6)

What is the domain of f(a)=(a+7)/(a^2+6a-7) ?
The domain of f(a)=(a+7)/(a^2+6a-7) is a<-7\lor-7<a<1\lor a>1